Juliet Moody and Catherine Crowley of Sparrow-Folk use humour in their song Ruin Your Day to make people confront their negative feelings about public breastfeeding. Photo: Jay Cronan

Their song Ruin Your Day hit 150,000 views during the week and has attracted praise from overseas.

As a mother of four - her youngest is 11 months - Moody said she had experienced discrimination while breastfeeding. ''I've had my fair share of comments under the breath or dirty looks, but, thankfully, I've never been kicked out or told to go and sit on the toilet seat,'' Moody said.

''It frustrated me that it was such an issue … and it made me step back and say, 'What is the real problem here?' Then we thought that if we made it a bit of a joke that boobs are scary and frightening, it might make people think, 'OK, what is my actual problem with it - if I see someone feeding, what am I worried is going to happen to me?'''

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Having fielded media interviews from Sydney and congratulatory messages from Canada and the US, the school teacher and actress are a bit bemused by all the fuss.

''We're shocked and gobsmacked. We reached over 110,000 views online and we've had amazing comments,'' Crowley said. And the response has been overwhelmingly positive.

''Some of our greatest idols have retweeted us: Tim Ferguson. Corinne Grant has been in contact … to have amazing comedians recognise your work as funny, it's just surreal,'' Moody said.

Lyrics such as ''Everybody knows new mothers are exhibitionists, taking every chance they get to ruin your day with tits'', and ''please don't offer me a blanket or a shawl - I'm happy for everyone to cop an eyeful'' saw media personality Tracey Spicer write to the pair - who perform the song as the group Sparrow-Folk - to say she burst out laughing in the middle of a shopping centre.

''When you've had a baby, you can be anxious, and when you get a negative comment, it can be difficult, so what we've tried to do is create something empowering,'' Moody said.

Crowley hopes it will become the new mothers' mantra.

''Lots of people want it as their ringtone - it's become an anthem and women have said they'll sing it next time they get a dirty look or comment.''

The viral video was produced in Canberra, with Moody stripping off in local cafe The Cupping Room.